client/src/styles-foundation.css

:root {
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #1f2328;
  background: #f7f7f4;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  --surface: #f7f7f4;
  --panel: #ffffff;
  --panel-2: #f0f1ee;
  --text: #1f2328;
  --muted: #6f747a;
  --line: #dedfdc;
  --accent: #2563eb;
  --accent-soft: #e7efff;
  --green: #15a46b;
  --danger: #c2413a;
  --shadow: 0 18px 48px rgba(20, 24, 31, 0.16);
}

[data-theme="dark"] {
  color-scheme: dark;
  color: #f4f4f5;
  background: #171717;
  --surface: #171717;
  --panel: #1f1f1f;
  --panel-2: #262626;
  --text: #f4f4f5;
  --muted: #a1a1aa;
  --line: #303030;
  --accent: #9fb7ff;
  --accent-soft: rgba(159, 183, 255, 0.16);
  --green: #37c58a;
  --danger: #ff6b62;
  --shadow: 0 18px 48px rgba(0, 0, 0, 0.36);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  white-space: nowrap;
  border: 0;
  clip: rect(0, 0, 0, 0);
}

* {
  box-sizing: border-box;
}

html,
body,
#root {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  overscroll-behavior: none;
}

body {
  position: fixed;
  inset: 0;
  width: 100%;
  overflow: hidden;
  touch-action: pan-y;
}

button,
input,
textarea {
  font: inherit;
}

button {
  -webkit-tap-highlight-color: transparent;
}

button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 1ms !important;
  }
}

.app-shell {
  position: fixed;
  inset: 0;
  display: grid;
  grid-template-rows: auto 1fr auto;
  width: 100vw;
  max-width: 100vw;
  height: var(--app-height, 100dvh);
  min-height: 0;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.72), rgba(247, 247, 244, 0)),
    var(--surface);
  color: var(--text);
  overflow: hidden;
  overscroll-behavior: none;
  touch-action: pan-y;
}

[data-theme="dark"] .app-shell {
  background: var(--surface);
}

.top-bar {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr) 44px;
  align-items: center;
  gap: 12px;
  min-width: 0;
  padding: calc(env(safe-area-inset-top, 0px) + 12px) 16px 10px;
  background: rgba(247, 247, 244, 0.9);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(222, 223, 220, 0.8);
  z-index: 20;
}

[data-theme="dark"] .top-bar {
  background: rgba(23, 23, 23, 0.94);
  border-bottom-color: rgba(48, 48, 48, 0.9);
}

.icon-button,
.ghost-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 44px;
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 999px;
  color: #353a40;
  background: transparent;
}

[data-theme="dark"] .icon-button,
[data-theme="dark"] .ghost-icon {
  color: #f4f4f5;
}

[data-theme="dark"] .icon-button:active,
[data-theme="dark"] .ghost-icon:active {
  background: #262626;
}

.icon-button:active,
.ghost-icon:active {
  background: #ecedea;
}

.top-docs-logo {
  display: block;
  border-radius: 7px;
  box-shadow: 0 0 0 1px rgba(24, 28, 33, 0.08);
}

[data-theme="dark"] .top-docs-logo {
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.16);
}

.top-title {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.top-title strong {
  font-size: 17px;
  line-height: 21px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.connection-status {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  line-height: 16px;
}

.connection-status.is-connected {
  color: var(--green);
}

.connection-status.is-connecting {
  color: #64748b;
}

.connection-status.is-disconnected {
  color: var(--danger);
}